Firearm accessory rail with slot adapter



FIG. 1 is a side perspective view of a firearm accessory rail with slot adapter showing my new design;

FIG. 2 is a top perspective view of the firearm accessory rail with slot adapter of FIG. 1;

FIG. 3 is a top view of the firearm accessory rail with slot adapter of FIG. 1; and,

FIG. 4 is a side view of the firearm accessory rail with slot adapter of FIG. 1. 

I claim the ornamental design for a firearm accessory rail with slot adapter, as shown and described. 